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/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hive.service.auth;
import javax.security.sasl.AuthenticationException;
import net.sf.jpam.Pam;
import org.apache.hadoop.hive.conf.HiveConf;
public class PamAuthenticationProviderImpl implements PasswdAuthenticationProvider {
private final String pamServiceNames;
PamAuthenticationProviderImpl() {
HiveConf conf = new HiveConf();
pamServiceNames = conf.getVar(HiveConf.ConfVars.HIVE_SERVER2_PAM_SERVICES);
}
@Override
public void Authenticate(String user, String password) throws AuthenticationException {
if (pamServiceNames == null || pamServiceNames.trim().isEmpty()) {
throw new AuthenticationException("No PAM services are set.");
}
String[] pamServices = pamServiceNames.split(",");
for (String pamService : pamServices) {
Pam pam = new Pam(pamService);
boolean isAuthenticated = pam.authenticateSuccessful(user, password);
if (!isAuthenticated) {
throw new AuthenticationException(
"Error authenticating with the PAM service: " + pamService);
}
}
}
}
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